Mining Incidents

Portable Crusher -101: 65 MSHA citations Metal/Non-Metal

Controlled by Mark T Thorson
Lisbon, Ransom County, ND  ·  Intermittent
MSHA Mine ID: 3200805

Portable Crusher -101 has $10K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
1
Years on record
2018
Latest incident
Jun 2018
Compliance record
MSHA citations since 2003
65
citations
18
significant & substantial
$10,335
proposed penalties
$10,335
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2003
27
inspections on record
341
inspection hours
n/a
citations per 100 inspection hours
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
Rate withheld: 341 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Portable Crusher -101 has $10K in proposed MSHA penalties and $0 outstanding across 0 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$10K
proposed penalties
$10K
current assessed
$10K
paid to date
$0
outstanding
64 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-11-13.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
28.1%
significant & substantial
9.4%
high negligence or reckless
28.1%
reasonably likely or greater
57.8%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 4.7% low, 85.9% moderate, 9.4% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
2 citations taken to the federal commission · 3% of citations on record
  • Settled 2 · 100%
100%
S&S designation survived the contest
Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 2 decided S&S contests · industry: 79%
37%
Penalty reduction in decided contests
$3K proposed, $2K after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2016-07-27.
Health sampling
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Metal and nonmetal contaminants (personal samples)
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2026-07-09
0%
of limit-tested samples over the exposure limit
5
samples
2
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz3
  • Respirable dust, <.1mg1
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (5)
Date Contaminant Concentration Limit Conc / limit Occupation
2026-07-09 Respirable dust, <.1mg 0 Dry Screen Plant Operator
2021-11-02 Quartz, respirable, >1% Qtz 0.23 Crusher Oper/Worker
2021-11-02 Quartz, respirable, >1% Qtz 0.67 1.52 0.44 Front-end Loader Operator
2003-06-11 Unlisted Particulate, respirable, <1% Qtz 0.13 Front-end Loader Operator
2003-06-11 Quartz, respirable, >1% Qtz 0.61 2 0.31 Crusher Oper/Worker

Area samples (mill and shop air)

Last sampled: 2016-04-27, 10 years ago
1
samples
Show the individual readings (1)
Date Contaminant Concentration Limit Conc / limit Area sampled
2016-04-27 Respirable dust, <.1mg 0 SF ACTIVE MINING
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Ownership history
  1. Mark Sand & Gravel Dakota Co 2002 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 1
2025 2
2024 2
2023 2
2022 1
2021 2
2020 1
2019 0
2018 2
2017 2
2016 1
2015 2
2014 2
2013 2
2006 0
2005 2
2004 3
2003 3
2002 3
Source: MSHA quarterly employment and production, updated weekly.

Portable Crusher -101 sits in Ransom County, North Dakota, where the Census mining category is 0.2% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Ransom County, North Dakota · Population 5,662
0.2%
Mining share of county employment
$74,521
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2026 Q2 1,268 0 0 0.0
2026 Q1 0 0 0
2025 Q4 1,351 0 0 0.0
2025 Q3 2,121 0 0 0.0
2025 Q2 897 0 0 0.0
2025 Q1 0 0 0
2024 Q4 575 1 1 1739.1
2024 Q3 899 3 0 3337.0
Show 61 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 0 0 0
2024 Q1 0 0 0
2023 Q4 329 0 0 0.0
2023 Q3 1,089 7 2 6427.9
2023 Q2 869 0 0 0.0
2023 Q1 0 0 0
2022 Q4 109 0 0 0.0
2022 Q3 0 0 0
2022 Q2 712 0 0 0.0
2022 Q1 0 0 0
2021 Q4 451 2 0 4434.6
2021 Q3 1,228 0 0 0.0
2021 Q2 962 5 1 5197.5
2021 Q1 0 0 0
2020 Q4 0 0 0
2020 Q3 1,092 2 0 1831.5
2020 Q2 1,267 0 0 0.0
2020 Q1 0 0 0
2019 Q4 0 0 0
2019 Q3 0 0 0
2019 Q2 0 0 0
2019 Q1 0 0 0
2018 Q4 758 0 0 0.0
2018 Q3 676 15 3 22189.3
2018 Q2 676 0 0 0.0
2018 Q1 0 0 0
2017 Q4 719 0 0 0.0
2017 Q3 1,745 6 1 3438.4
2017 Q2 1,268 0 0 0.0
2017 Q1 0 0 0
2016 Q4 77 0 0 0.0
2016 Q3 59 0 0 0.0
2016 Q2 1,036 3 1 2895.8
2016 Q1 0 0 0
2015 Q4 1,132 0 0 0.0
2015 Q3 1,219 3 0 2461.0
2015 Q2 1,096 0 0 0.0
2015 Q1 0 0 0
2014 Q4 670 0 0 0.0
2014 Q3 1,219 3 1 2461.0
2014 Q2 705 0 0 0.0
2014 Q1 0 0 0
2013 Q4 360 0 0 0.0
2013 Q3 1,802 0 0 0.0
2013 Q2 725 0 0 0.0
2006 Q2 0 0 0
2006 Q1 0 0 0
2005 Q4 621 0 0 0.0
2005 Q3 729 0 0 0.0
2005 Q2 791 3 2 3792.7
2005 Q1 1 0 0 0.0
2004 Q4 820 0 0 0.0
2004 Q3 1,629 0 0 0.0
2004 Q2 720 7 5 9722.2
2004 Q1 1 0 0 0.0
2003 Q4 649 0 0 0.0
2003 Q3 1,307 0 0 0.0
2003 Q2 870 5 1 5747.1
2003 Q1 1 0 0 0.0
2002 Q4 145 0 0 0.0
2002 Q3 516 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2018 · 1 incident

June 15, 2018 ND · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Mark Sand & Gravel Dakota Co · Fall from machine

Employees on site were completing a swap of a rental screen plant for a company owned screen plant. EE climbed off of the catwalk and onto a discharge conveyor belt. EE lost ee balance and fell to the ground and landed on side.